391200-06-9Relevant academic research and scientific papers
Preparation method of 3-substituted phenyl-4,5-dihydroisoxazole derivative and application and intermediate thereof
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Paragraph 0053, (2019/10/01)
The invention relates to a preparation method of a 3-substituted phenyl-4,5-dihydroisoxazole derivative and application and an intermediate thereof. A cyano compound (V) is converted into an N-hydroxybenzimidium compound (VII), and then 3-substituted phenyl-4,5-dihydroisoxazole intermediate (IX) is synthesized through a diazotization chlorination reaction and a dipolar cycloaddition reaction; a reaction condition is mild and controllable, the reaction selectivity in each step is good, the yield is relatively high, production of some byproducts is avoided, the product quality is guaranteed, andindustrialization of a whole technological route is easy to implement.
Preparation of -4-thioalkybrobenzene derivatives
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, (2008/06/13)
A process for preparing 4-thioalkylbromobenzene derivatives of the formula I where: R1 is C1-C6-alkyl, C1-C6-haloalkyl, C1-C6-alkoxy, C1-C6-haloalkoxy, Csu
